[Mailman-Users] found error in maillog: unavailable service ...

[cfkwok]

Dear all,

I installed mailman and created new mailing list.
Until now, I cannot use the mailing list to send out mail.
I found that following errors occur in /var/log/maillog:
------------------------------------------------
Jan .... smrsh: uid 8: attempt to use wrapper post test
Jan .... sendmail[3111]: XAA03111: to="|/home/mailman/mail/wrapper post
test", delay=00:00:00, xdelay=00:00:00, mailer=prog, stat=Service
unavailable
Jan .... sendmail[3111]: XAA03111: XAB03111: DSN: Service unavailable
------------------------------------------------
Similar message occur for "wrapper mailowner test"
uid 8 is the user "mail"

How to solve this problem?
Hope for helps!
Thanks!

C.F.Kwok